Temporary binder.



PATENTED FEB. 25, 1908.

C. D. TRUSSELL.

TEMPORARY BINDER.

APPLICATION FILED MAR.17, 1906.

C (/9777 (Fifi C12 Qfiorng UNITED STATES PATEN CLARENCE D. TRUSSELL, OF NEW YORK, N. Y., ASSIGNOR, BY DIRECT AND MESNE ASSIGN- MENTS, TO TRUSSELL MANUFACTURING COMPANY, A CORPORATION OF NEW YORK.

TEMPORARY BINDER.

Specification of Letters Patent.

Patented Feb. 25, 1908.

Application filed March 17. 1906. Serial'No. 306.541.

to manufacture, which may be easily and ac-' curately opened and closed and held in either position.

Figure 1 of the drawings is a perspective view of my temporary binder, showing the same equipped with covers for protecting the leaves of the book. Fig. 2 is an enlarged side view of a pair of the sheet-holding prongs in closed position, the parts below being shown in section. Fig. 3 is a similar view showing the sheet-holding prongs in open position. Fig. 4 is an enlarged side view of the sheetholding prongs. Fig. 5 is a plan view of the spring plate. Fig. 6 is a rear view of the same, showing the binding plate.

Referring to the drawings, 1 is a spring plate adapted to be secured to the back 2 and covers 3 by means of the binding plate 4 whose end projections 5 are bent through the notches 6 in the ends of spring plate l to clamp to other said spring plate 1 and the binding p ate 4 so as to hold securely between said plates the binding strip 7 ,whose edges extend between the layers of the cover 3 where they are pasted to secure the parts, as illustrated in Figs. 1, Zand 3. The spring plate 1is composed of a curved base portion 8, from which are bent inwardly the two parallel wings 9, which are provided with oppositely arranged notches 10. The sheet-holding prongs 11 are made in two pieces, one piece having at its lower end a tongue 12, adapted to engage a groove or notch 13 in the lower end of the opposite prong. A small notch 14 is formed in the upper end of one of the prongs. Each prong has a small slit or notch 15 in its side near its lower end, adapted to be en aged by the inner edge 16 of one of the notc cs 10 in the spring plate 1.

It will be observed that the operating parts consist of the spring plate 1 and the parts in position along the back of the book. The projections 5 extend through the notches 6 in plate 1 and are clamped firmly over the edge of plate 1, as best shown in Figs. 1 and 6.

The spring plate 1, which is preferably made of metal, is resilient. When the sheetholding prongs are in the closed position illustrated in Fig. 2, the joint formed by the tongue 12 and groove 13 is slightly below the level of the edges 16, which engage the notches 15, so that the spring pressure of the spring plate 1 holds the sheet-holding prongs 11 in closed position. To open the prongs, thefinger-nail is inserted in notch 14 to pull the right-hand prong to the right. As the righthand prong is moved to the right, it rocks slightly on the edge 16 as a center, so that its lower end is raised, carrying upward at the same time the lower end of the opposite prong, which rocks on the oppositely arranged edge 16, thus shifting the upper portion of the left-hand prong to the left. The first part of this movement is made against the pressure of spring plate 1 but, as the lower joint between the two prongs is raised, it passes the level of the edges 16 so that the pressure of the spring plate 1. then serves to force the prongs apart and into the position shown in Fig. 3. The upward movement of the prongs is terminated by two stops acting concurrently. The upper edge of each notch 15 contacts simultaneously with the upper. surface of each wing 9 of spring plate 1, and, at the same time, the ends of the prongs meet below the joint as shown in Fig. 3. To close the prongs, they are moved together by the fingers. This movement lowers the joint below the level of edges 16 so that spring plate 1, at the moment the joint passes the central position, serves to snap the prongs 1.1 together and retain them in the position shown in Fi 2. The sides of the notches 10 serve to .hold the prongs 11 from movement sidewise and in exact. alinement. The notches 14 are especially useful with binders of small size where it would be inconvenient to pull the prongs apart by grasping them with the fingers.

The operating parts and the binding plate 4 are removable from the covers of the book. To detach the parts, one of the projections 5 should be raised away from engagement with spring plate 1, which is then free to be lifted and pulled from engagement with the opposite projection 5. When the spring plate 1,

- carrying the prongs 1 1 has been removed, the

binding late 4 may be withdrawn from its position etween binding stri 7 and back 2. To reassemble the parts, the inding plate 4 is slipped into position between binding strip 7 and back 2. One of the projections 5 is then bent inward and engaged by the edge of a notch 6 in spring plate 1, which is then held closely against binding strip 7 while the opposite projection 5 is bent over the edge of the adjacent notch 6 to secure the parts in position.

What I claim as new and desire to secure by Letters Patent is: j 1. In a temporary binder, a spring plate having integral parallel Wings, and matin prongs notched for engagement with sai wings and retained by the resiliency of said spring-plate in open or closed position. I 2. In a temporary binder, a spring plate having oppositely arranged notches, mating prongs having notches a apted to engage the edges of the notches-in the spring plate and a joint for each ofsaid mating prongs ada ted to be moved above or below the level 0' the notches in the spring plate for opening or closin' said prongs- 3. n a temporary binder, a resilient me In-- ber-carrying mating prongs notched in their periphery for engagement with integral wings of said resilient member, and means whereby the spring of said member retains said prongs inopen or closed position. v

' 4. In a temporary binder, a series of mat-V ing prongs having notches in their sides and a spring member adapted to engage said notches and to retain the prongs open when their joints are in one position and to hold the rongs together when the joints are in anot er position.

' 5. In a temporaryrectly and loosely carried upon said sprlng ing parts composed of anuneven num er of binder, an integral sipring member, a series of mating prongs H and means to shift the joints of the prongs above or below the points of contact between the prongs and the spring member to retain the prongs in open or closed position.

- 6. In a temporary binder, a set of o eratintegral pieces, viz: any number of mating prongs each havin a right and left jaw and a spring member irectly carrying all the prongs and-adapted to retain each set of prongs in open or closed position.

7. Ina temporary binder, a spring member,- and a series of mating prongs directlycarried on said member each pair of mating prongs having av tongued joint adapted to the spring plate by end projections adapted to be bent upward and inward to engage said spring plateand secure thereto a binding strip.

9. In a temporarybinder, a spring plate notched at each end and a bindin plate adapted to be held thereon remova ly by end projections engaging said end notches in I said sprin plate to secure a binding strip between t e spring plate and the ,binding plate andpresent a smooth surface at the ack of the binder.

10. In a temporary binder, a spring member, a binding plate, a binding stri so secured to the covers as to form a sheat for the entrance of the binding late, and end pro jections on the binding p ate adapted to en gage the s ring member to hold the operat- 1n%parts, ack and covers togethen lgned at New York city in the county of New York and State of New York this 15th day of March,-A.D., 1906.

CLARENCE D. TRUSSELL. Witnesses JosEPn A. STETSON,

' MINNIE KA'UFFMAN: 

